Fire-extinguisher.



No. 674,827. Paten ted May 2:, I90l. .A. w. EDMANDS. FIBE EXTINGUISHER.

(Application filed July 24, 1900.)

(No Model.)

14 10 n ra \VnTNEE-EE UTTED STATES PATENT OFFICE.

ALBERT W. EDMANDS, OF LYNN, MASSACHUSETTS, ASSTGNOR OF THREE- FOURTHS TO HENRY S. THRASHER, JAMES F. WVILLIAMS, AND JOHN INGRAM, OF SAME PLACE.

FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 674,827, dated May 21, 1901.

Application filed July 24,1900. Serial No. 24,645. (No model.)

To all whmn/ it may concern: that no liquid or gas can leave the fire-extin Be it known that I, ALBERT W. EDMANDS, guisher through the outlet 3 without passing of Lynn, in the county of Essex and State of through the turbine-casing and operating Massachusetts, have invented certain new the turbine 4. To the shaft 8 of the turbine 5 and useful Improvements in Fire Extinis attached a stirring device 9. (Shown in guishers, of which the following is a specifiplan in Fig. 5 and in elevation in Fig. 1.) cation. As here shown, the stirring device is some- This invention relates to portable fire-ex what cupshaped, having a number of vanes tinguishers, and has for its object to provide 16 in its interior, radially arranged about its 10 a simple and eificient automatic device for center. agitating the materials in the fire extin- Owing to the fact that the stirring device guisher while the apparatus is in use. is located opposite and near to the outlet or The invention consists in a stirring mechmouth of the inner receptacle instead of exanism operated by the flow of the liquid issutending to act on the main or entire body of 15 ing from the extinguisher. liquid in the outer casing, said stirrer acts In the drawings, Figure 1 represents an eleprimarily and almost solely on the contents vation of the apparatus with the outer casof the inner and smaller receptacle, so as to ing partially cut away. Fig. 2 represents a diffuse it and cause it to quickly mingle with longitudinal section of the apparatus on line the larger quantity of liquid in the casing 1.

2o 2 2 of Fig. 3. Fig. 3 represents a cross-sec- Moreover, the two liquids are mixed only as tion on the line 3 3 of Fig. 1. Fig. 1 reprethey emerge or are about to emerge from sents a sectional view similar to that of Fig. their respective receptacles instead of being 2, but showing the apparatus inverted. Fig. agitated throughout the entire or main body 5 represents a plan view of the stirring dethereof. This enables a small motor and 25 vice. Fig. 6 represents a detailed elevation small stirrer to be made efiective, as the of a portion of the stirring mechanism. work to be performed by them is slight.

The same reference-numerals refer to the As it is desirable to have the acid-receptasame parts in all the figures. cle 2 covered when the apparatus is not in use Referring to the drawings, the outer casto prevent deterioration I construct the de- 0 ing 1 of the fire-extinguisher holds a quanvice in such a way that when the extinguisher 8o 4 tity of water containing a suitable alkaline is held upright the stirrer 9 rests upon and salt in solution, anda smaller receptacle 2, covers the open mouth of the receptacle 2, and supported in the upper part of the extinwhen the apparatus is inverted the stirrer guisher, is filled with acidulated water. When falls into its working position, leaving the 35 the apparatus is to be used, it is first inmouth of the receptacleZuncovered. To acverted,when the receptacle 2 opens and allows complish this result, I make the stirrer 9 fast the acidulated water to run out and mix to the shaft 8, which is loose in the hub 12 of with the alkali water outside. By the reacthe turbine 4 and has a bearing in a socket tion of the acid with the alkali a gas is formed 10 in the end wall of the extinguisher-tank 1.

40 which raises the pressure within the extin- The shaft 8 is connected to the turbine 4, so guisher to a point somewhat higher than the that both will rotate together, but that the atmospheric pressure, so that when a suitshaft may move endwise in the hub of the able outlet 3 is opened the water issues from turbine by a pin 11 in the shaft, the ends of the apparatus with more or less force. Withwhich protrude into slots 13 14 in the hub 12.

5 in the extinguisher is a motor, preferably a I do not limit myself to stirring mechanism small turbine 4, in a casing 5, securely fasof the size and shape here shown, as I wish to tened near the mouth of the extinguisher, use any other form of stirrer'or motor that said casing having an inlet 6 in the center may seem more desirable. and an outlet 7, which is connected with the The main advantages of this form of appa- 50 outlet 3 of the extinguisher in such manner ratus over all others are that it provides a too ll s simple and efficient means of thoroughly mixing the ingredients, and thus obtaining the greatest possible amount of chemical action, and therefore mechanical work, from the apparatus, and that the mixing device is automatic, being in operation during the whole time.

I claim-- 1. The combination with the main tank or receptacle of a fire-extinguisher, of an inner receptacle in its upper portion containing a chemical substance adapted to combine with a second chemical substance in the extinguisher-tank, and a stirrer located opposite and near the outlet of the inner receptacle to act primarily on the contents of said inner: receptacle to diffuse it as it emerges therefrom, and operated by pressure generated by the chemical combination.

2. The combination with the main tank or receptacle of a fire-extinguisher, of an inner receptacle in its upper portion containing a chemical substance adapted to combine with a second chemical substance in the extinguisher-tank, a stirring device located opposite and near the outlet of the inner receptacle to act primarily on the contents of said inner receptacle to diffuse it as it emerges therefrom, and means for operating said stirring device, consisting of a motor actuated by the flow of fluid from the extinguisher resulting from pressure generated in the extinguisher by the chemical combination.

3. Thecombination withafire-extinguisher containing a chemical mixture, of a device for stirring said mixture, said device being located opposite and near the outlet of the inner receptacle of said fire-extinguisher to act primarily on the contents of said inner receptacle to diffuse it as it emerges therefrom, and a motor for operating said stirring device, consisting of a turbine, and a casing inclosing the turbine, having an inlet open to the fluid in the extinguisher-tank, and an outlet communicating with the outlet of the extinguisher.

4. In a fire-extinguisher having in its upper portion an in ner receptacle containing a chemical substance, a stirring device located near the mouth of said receptacle and adapted to act as a gravity-stopper, covering the receptacle when the apparatus is upright, and being removed from the same by gravity when the apparatus is inverted.

5. In a fire-extinguisher having an inner receptacle and a stirring device located near the mouth of said receptacle and adapted to cover the same, said stirring device being driven by a motor, means for so connecting said stirring device to said motor that the distance between them may be varied, said means consisting of projections on the spindle of the stirring device and slots in the hub of the motor.

In testimony whereof I have afltlxed my signature in presence of two witnesses.

ALBERT W. EDMANDS.

Witnesses:

CARROLL A. DWINELL, HERMAN EMERSON. 

